Septic tank.



W. A. MOKNIGHT.

SEPTIC TANK. APPLICATION FILED AUG. 3, 1912. 1 ,046,997, Patented Dec.3, 1912.

2 SHEETS-SHEET 1.

N N &3 Q l u. A. MoKNIGHT, or ar-nxrs, rumors.-

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'- cent its peripheral edge with acontinuous To all whom it may concern:

Be it known that I, WILLIAM A. Mo- Kmen'r, a citizen of the UnitedStates, residing at Alexis, in the county of Warren and State ofIllinois, have invented certain new and useful Improvements in- SepticTanks, of which the followin is a specifica-. tion, reference being hadto t e accompanyin drawings.

. his invention relates to septic tanks and has for its principal objectthe provision of a tank of the above stated character whereby thesewerage contained therein will be thoroughl and efiiciently catalyzed.

A t urther object of the invention is the provision of an apparatus ofthe foregoing character comprising a series of compartmentscommunicating with one another and a system of pipes whereby the lighterand heavier constituents of the sewerage may be separated, dissolved anddeodorized by oxidation.

A still further object of the invention is the provision of ahermetically sealed septic tank comprisinga series of. compartmentsseparated by partitions and means for carrymg llOXlOlIS gases from theinlet compartment direct to the outlet compartment, thus providing aseparate exit for the gas from that of the sewerage to the outletcompartment.

With these and. other objects in view as will appear as the descriptionproceeds, the invention comprises various novel features ofconstruction, combination and arrangementof parts as will be more fullydescribed hereinafter and set forth with particularity in the appendedclaims.

Referring to the drawings Figure 1 is a plan view of'm'y improved septictank showing the cover thereof removed; Fig. 2 is a verticallongitudinal sectional view of the tank; Fig. 3 is a transversesectional view taken on the line 33 of Fig. 2; and Fig. 4 is a detailperspective view of one end of one of the overflow troughs. m

By referring to the drawings, the reference numeral 4 will be seen todesignate a tank constructed of concrete or masonry walls. These wallsconsist of end walls 2 and 3 respectively, side walls 4, a bottom 5. atop or cover 6 and intermediate walls or partitions 7 and 8respectively, dividing the tank into a serles of compartments A, B

and C.

The, bottom of the tank is formed adja- Speclflcation of Letters Iatent.Application filed August a, 1912. Serial no. 719,121.

' Patented Dec. 3, i912.

groove 9 and is adapted to receive the tongues 10 formed on the lowerinner edge of the end and side walls. The opposite vertical edges of theside walls 4 are recessed 'to form grooves 11 and are adapted to recelvethe opposite vertical edges of the end walls 2 and 3.

Arranged transversel overflow troughs 12 an are provided upon their endsand bottoms with tongues 13 and 14 which are adapted to seat withincorresponding recesses 15 and 16 formed in the bottom 5 and the sidewalls 4 respectively.

of the overflow trough 1s V-shaped channel 17 which extends through itslength to points adjacent its opposite ends. Grooves 18 extend from theterminal ends of the channel 17 through theupper face of the overflowtrough 12 through the ends of the latter and are adapted to receive thelower longitudinal edges of the partitions 7 and 8.- The side walls 4are provided at spaced intervals with vertical grooves 19 adapted toreceive the opposite vertical edges 20 of the partitions 7 and 8.

The upper face provided with a The cover 6 is also provided in its underface 7 adjacent its peripheral edge with a continuous groove 21 adaptedto receite the tongues 22 upon the upper inner edges of the end walls 2and 3 and the side walls 4:, whereby said tank may have its coverhermetically sealed thereon. The cover is also provided 1n 1ts underface wlth transverse grooves 23 adapted to receive the upper edges ofthe of the tank arepartitions 7 and 8 whereby each of the compart-mentsA, B and C maybe hermetically sealed from one another. An inlet sewerpipe 24 enters the tank through the end wall 2 and extends down into thecompartment- A and terminates at a point below the level of the surfaceof the sewerage contained within the tank. A11 overflow pipe 25 entersthe compartment C throughthe rear end wall 3 and terminates at a pointbelow the surface of the sewerage. Arranged within the compartment C andsurrounding the overflow pipe 25 is a suitable wall 26 which may beformed of masonry or any other suitable material. This wall extendsupward to a point slightly above the lower end of the overflow pipe 25.A pipe 27 extends from the compartment A through the partitions 7 and 8and into the compartment C, thusestablishing a direct communicationbetween ions gases accumulating withinthe compart-' erage flows inthrough the inlet pipe 24 into the compartment A where the heavierconstituents are arrested by the overflow trough 12 whereas the lightercan pass over the overflow trough and beneath the lower edge 1on7 intothe compartment B;

of the-partit or more dense constituents in the heaviercompartment Bwill descend and be arrested by the other overflow'trough 12 and thelighter will pass over the overflow trough l2 and beneath the partition8 into the compartment G whereagain the heavier constituents willdescend and be arrested by --the wall 26, the lighter or remainingportionof' the sewerage passing over the wall 26 and out throu h theoverflow pi e 25.

From t e foregoing descrlption taken in connection with the accompanyingdrawings, the advantages of construction and the method of operationwillbe readily apparent to those skilled in the art to which theinvention relates, and while I have described the principle of operationof the invention, to ether with the 'device which I now consi er to bethe best embodiment thereof, I'

desire to have it understood that such changes may be madewhen desired,as are within thescope of the appended claims,

Having thus fully described my invention what I claim as new is: 1. Aseptic tank, comprising a series of; compartments separated bypartitions, troughs arranged below said partitions, the top of each ofsaid/troughs being formed with cent-rally dis osedlongitudinal groovesat its opposite en s for the reception of the bottom edges of saidpartitions, an inlet pipe communicating with one of said compartments,and an outlet pipe communicating with the last consecutive compartment.

2. A septic tank, com compartments, separate by partitions, a trougharranged beneath each of said partitions, the side walls and the bottomof said troughs being formed with longitudinal centrally disposed ribs,said ribs adapted to enrising a series of trough arranged I Lemon-7 ga ecorresponding grooves in the bottom an side walls of said tank, wherebysaid troughs are'held in position in said tank, an inlet pipe for one ofsaid compartments, and an outlet pipe for the last consecutivecompartment.

. 3. A. septic tank com rising a series of compartments sepgrate bypartitions, a

titions, eachof said troughs being formed upon its upper face withcentrally disposed longitudina slots at its opposite ends, the

lower edges of said partitions adapted to rest in said slots whereby theupper edges of the troughs .are arranged in a plane slightly above thelower edges of the partitions, a

pipe extending through said partitions establishing direct communicationbetween the I first and last consecutive compartments, an inletpipedorone of said compartments, and an outlet pipe for the last consecutivecompartment.

4. A septic tank, a cover for said tank,.the

tank being provided with .a series of con secutive comipartmentsseparated by partitions, each 0 said partitions terminating at a pointabove the bottom of the tank, an overflow trough arranged beneath saidpartition, the upper longitudinal edges of the latterprojecting upwardto a point slightly above the lower edge of the artition, a pipeestablishing direct communlcation between the first and last of saidconsecutive compartments, an inlet pipe entering at the top anddepending into one of said com artments, an overflow pipe entering andepending into the last consecutive compartment, and a wall arrangedwithin this latter compartment around I the lower depending end of theoverflow pipe, said wall projecting upward to a point slightly above thelower end of theoverflow pipe and above and beyond the level of theoverflow trough.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses, 9;

WILLIAM A. MoKNIGHT.

neath each of said par

